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- /*
- * Copyright 2011 gitblit.com.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package com.gitblit.servlet;
-
- import java.io.IOException;
- import java.text.MessageFormat;
- import java.text.ParseException;
- import java.util.Date;
-
- import javax.servlet.ServletException;
- import javax.servlet.http.HttpServletResponse;
-
- import org.eclipse.jgit.lib.Repository;
- import org.eclipse.jgit.revwalk.RevCommit;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
-
- import com.gitblit.Constants;
- import com.gitblit.IStoredSettings;
- import com.gitblit.Keys;
- import com.gitblit.dagger.DaggerServlet;
- import com.gitblit.manager.IRepositoryManager;
- import com.gitblit.utils.CompressionUtils;
- import com.gitblit.utils.JGitUtils;
- import com.gitblit.utils.MarkdownUtils;
- import com.gitblit.utils.StringUtils;
-
- import dagger.ObjectGraph;
-
- /**
- * Streams out a zip file from the specified repository for any tree path at any
- * revision.
- *
- * @author James Moger
- *
- */
- public class DownloadZipServlet extends DaggerServlet {
-
- private static final long serialVersionUID = 1L;
-
- private transient Logger logger = LoggerFactory.getLogger(DownloadZipServlet.class);
-
- private IStoredSettings settings;
-
- private IRepositoryManager repositoryManager;
-
- public static enum Format {
- zip(".zip"), tar(".tar"), gz(".tar.gz"), xz(".tar.xz"), bzip2(".tar.bzip2");
-
- public final String extension;
-
- Format(String ext) {
- this.extension = ext;
- }
-
- public static Format fromName(String name) {
- for (Format format : values()) {
- if (format.name().equalsIgnoreCase(name)) {
- return format;
- }
- }
- return zip;
- }
- }
-
- @Override
- protected void inject(ObjectGraph dagger) {
- this.settings = dagger.get(IStoredSettings.class);
- this.repositoryManager = dagger.get(IRepositoryManager.class);
- }
-
- /**
- * Returns an url to this servlet for the specified parameters.
- *
- * @param baseURL
- * @param repository
- * @param objectId
- * @param path
- * @param format
- * @return an url
- */
- public static String asLink(String baseURL, String repository, String objectId, String path, Format format) {
- if (baseURL.length() > 0 && baseURL.charAt(baseURL.length() - 1) == '/') {
- baseURL = baseURL.substring(0, baseURL.length() - 1);
- }
- return baseURL + Constants.ZIP_PATH + "?r=" + repository
- + (path == null ? "" : ("&p=" + path))
- + (objectId == null ? "" : ("&h=" + objectId))
- + (format == null ? "" : ("&format=" + format.name()));
- }
-
- /**
- * Creates a zip stream from the repository of the requested data.
- *
- * @param request
- * @param response
- * @throws javax.servlet.ServletException
- * @throws java.io.IOException
- */
- private void processRequest(javax.servlet.http.HttpServletRequest request,
- javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException,
- java.io.IOException {
- if (!settings.getBoolean(Keys.web.allowZipDownloads, true)) {
- logger.warn("Zip downloads are disabled");
- response.sendError(HttpServletResponse.SC_FORBIDDEN);
- return;
- }
-
- Format format = Format.zip;
- String repository = request.getParameter("r");
- String basePath = request.getParameter("p");
- String objectId = request.getParameter("h");
- String f = request.getParameter("format");
- if (!StringUtils.isEmpty(f)) {
- format = Format.fromName(f);
- }
-
- try {
- String name = repository;
- if (name.indexOf('/') > -1) {
- name = name.substring(name.lastIndexOf('/') + 1);
- }
- name = StringUtils.stripDotGit(name);
-
- if (!StringUtils.isEmpty(basePath)) {
- name += "-" + basePath.replace('/', '_');
- }
- if (!StringUtils.isEmpty(objectId)) {
- name += "-" + objectId;
- }
-
- Repository r = repositoryManager.getRepository(repository);
- if (r == null) {
- if (repositoryManager.isCollectingGarbage(repository)) {
- error(response, MessageFormat.format("# Error\nGitblit is busy collecting garbage in {0}", repository));
- return;
- } else {
- error(response, MessageFormat.format("# Error\nFailed to find repository {0}", repository));
- return;
- }
- }
- RevCommit commit = JGitUtils.getCommit(r, objectId);
- if (commit == null) {
- error(response, MessageFormat.format("# Error\nFailed to find commit {0}", objectId));
- r.close();
- return;
- }
- Date date = JGitUtils.getCommitDate(commit);
-
- String contentType = "application/octet-stream";
- response.setContentType(contentType + "; charset=" + response.getCharacterEncoding());
- response.setHeader("Content-Disposition", "attachment; filename=\"" + name + format.extension + "\"");
- response.setDateHeader("Last-Modified", date.getTime());
- response.setHeader("Cache-Control", "no-cache");
- response.setHeader("Pragma", "no-cache");
- response.setDateHeader("Expires", 0);
-
- try {
- switch (format) {
- case zip:
- CompressionUtils.zip(r, basePath, objectId, response.getOutputStream());
- break;
- case tar:
- CompressionUtils.tar(r, basePath, objectId, response.getOutputStream());
- break;
- case gz:
- CompressionUtils.gz(r, basePath, objectId, response.getOutputStream());
- break;
- case xz:
- CompressionUtils.xz(r, basePath, objectId, response.getOutputStream());
- break;
- case bzip2:
- CompressionUtils.bzip2(r, basePath, objectId, response.getOutputStream());
- break;
- }
-
- response.flushBuffer();
- } catch (IOException t) {
- String message = t.getMessage() == null ? "" : t.getMessage().toLowerCase();
- if (message.contains("reset") || message.contains("broken pipe")) {
- logger.error("Client aborted zip download: " + message);
- } else {
- logger.error("Failed to write attachment to client", t);
- }
- } catch (Throwable t) {
- logger.error("Failed to write attachment to client", t);
- }
-
- // close the repository
- r.close();
- } catch (Throwable t) {
- logger.error("Failed to write attachment to client", t);
- }
- }
-
- private void error(HttpServletResponse response, String mkd) throws ServletException,
- IOException, ParseException {
- String content = MarkdownUtils.transformMarkdown(mkd);
- response.setContentType("text/html; charset=" + Constants.ENCODING);
- response.getWriter().write(content);
- }
-
- @Override
- protected void doPost(javax.servlet.http.HttpServletRequest request,
- javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException,
- java.io.IOException {
- processRequest(request, response);
- }
-
- @Override
- protected void doGet(javax.servlet.http.HttpServletRequest request,
- javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException,
- java.io.IOException {
- processRequest(request, response);
- }
- }
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